PageLock Website Copy Protection - description from Softdepia.com:

Protect your website's HTML code and design from theft using this easy to use program.
PageLock encodes HTML in a way that makes it difficult to make unauthorised copies whilst still allowing the resulting webpage to be displayed in a JavaScript compatible web browser without disruption to its design.
PageLock also provides options for preventing text from being selected and the right mouse button being clicked.

PageLock Website Copy Protection is a "Free to try" program. You can download and try it for an evaluation period.